See:
MSNBC: What IMs say about your relationship
The more frequently women use the pronoun "I" in their instant messages (IM), the more satisfied they are with their partners, a new study finds
IHT:
What do women want? (long but interesting and touching on evolutionary psychology)
In men who have trouble getting erect, the genital engorgement aided by Viagra and its rivals is often all that's needed. The pills target genital capillaries; they don't aim at the mind. The medications may enhance male desire somewhat by granting men a feeling of power and control, but they don't, for the most part, manufacture wanting. And for men, they don't need to. Desire, it seems, is usually in steady supply. In women, though, the main difficulty appears to be in the mind, not the body, so the physiological effects of the drugs have proved irrelevant. The pills can promote blood flow and lubrication, but this doesn't do much to create a conscious sense of desire.
IHT: It's the economy, girlfriend
PhysOrg: Infidelity produces faster sperms